Guys I made an ignition coil driver similar to the attached document.
Can somebody tell me
1) whats the purpose of the diode that I highlighted?If I not use it what will happen?
I added a 7812 to power the NE-555. Without EARTH the system after a few seconds the regulator burns.
2)Do I need to EARTH the circuits ground terminal?
Can somebody tell me
1) whats the purpose of the diode that I highlighted?If I not use it what will happen?
I added a 7812 to power the NE-555. Without EARTH the system after a few seconds the regulator burns.
2)Do I need to EARTH the circuits ground terminal?